6678715 has 4 divisors (see below), whose sum is σ = 8014464. Its totient is φ = 5342968.

The previous prime is 6678713. The next prime is 6678743. The reversal of 6678715 is 5178766.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6678715 - 2¹ = 6678713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6678713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 667867 + ... + 667876.

It is an arithmetic number, because the mean of its divisors is an integer number (2003616).

Almost surely, 2^6678715 is an apocalyptic number.

6678715 is a deficient number, since it is larger than the sum of its proper divisors (1335749).

6678715 is a wasteful number, since it uses less digits than its factorization.

6678715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335748.

The product of its digits is 70560, while the sum is 40.

The square root of 6678715 is about 2584.3209939944. The cubic root of 6678715 is about 188.3205167008.

The spelling of 6678715 in words is "six million, six hundred seventy-eight thousand, seven hundred fifteen".